I used low gain for audio technicas, and high gain for AKG's power hungry k240 sextetts. The M³ excelled with both of them.
Shouldn't be too much to say about this amp.
Rockhopper Audio M³ with Steps power supply - matching cases
~ 3x AD843JN opamps ~socketed opamps, user can roll opamps as desired
~2 sets of RCA jacks, 1 loop out configuration [can connect to another amp/speaker/what not]
~gain switch (4 and 11? or 6 and 11, somewhere around there)
~nice weighty metal (gold plated?) volume knob. [just feels better to use than the empty hollow plastic ones]
~bias' should have been checked and set awhile ago, to make sure everything was proper
Paypal preferred (mark as gift or add 3%)
Price includes shipping. *edit ; forgot to mention*
I'd prefer to keep this a domestic transaction.
As always, feedback is in my signature (and there's one on this new feedback system too). Buy with confidence; for any and all questions feel free to PM.